The main object of this study is to investigate the collection characteristics of an electro-static multi-staged impaction system, experimentally. The experiment is carried out to analyze the characteristics of pressure drop and collection efficiency for the present system with the experimental parameters such as the inlet velocity, stage number, applied voltage and shape of discharge electrode, etc. In results, the pressure drop is shown below 148 mmH2O lower than that of the conventional bag filter at inlet velocity 3.46 m/s and 5 stage. For 5 stage , the collection efficiencies are to be 97.4, 99.0% with the applied voltage 0 kV at the inlet velocity 2.07, 3.46 m/s, while 98.4, 99.9% with 40 kV of a sharp edge discharge electrode. Additionally, the present system is to be considered as an effective compact system for a removal of particulate pollutants from marine diesel engines due to much higher collection efficiency and appropriate pressure drop.

• 여석준(부경대학교 환경공학과) | Seok-Jun YOA (Department of Environmental Engineering, Pukyong National University, Busan 608-737, Korea) Corresponding author
• 권준형(부경대학교 환경공학과) | Jun-Hyeong KWON (Department of Environmental Engineering, Pukyong National University, Busan 608-737, Korea)